{"product_id":"the-summitline-ultralight-hiking-backpack","title":"The Summitline | 25L-45L Ultralight Water-Resistant Hiking Backpack","description":"\u003cdiv class=\"product-narrative\"\u003e\n\u003cp\u003eA trail is a conversation between weight and will. The bag on your back either joins that conversation or drowns it out, and the difference is decided long before the first climb, in the way the straps settle, the way the load sits against your spine, and the way the fabric shrugs off a sudden shower. The Summitline was built so that the gear disappears and the trail stays.\u003c\/p\u003e\n\u003cp\u003eIt comes in two honest sizes. The 25L carries a day's worth of water, food, layers and electronics, and it slips through airport carry-on checks without an argument. The 45L stretches to multi-day treks, camping loads and extended travel, with room to spare for the things you did not plan to bring home. Both are cut from high-density nylon with a water-resistant treatment, stitched to survive years of rough handling on trails, trains and car roofs.\u003c\/p\u003e\n\u003cp\u003eThe details are quiet but deliberate. Padded shoulder straps spread the weight instead of digging in. A breathable back panel keeps air moving on warm climbs. Organizer pockets keep phone, keys, power bank and water bottle where your hand already is. This is a backpack that does not ask you to adapt to it. It adapts to you, and then it gets out of the way.\u003c\/p\u003e\n\u003cp\u003e\u003cem\u003eCarry less baggage. Carry more trail.\u003c\/em\u003e\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-features\"\u003e\n\u003ch3\u003eKey Features\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003e✦\u003c\/strong\u003e Dual-capacity design: choose the 25L for day trips, gym sessions and carry-on travel, or the 45L for multi-day adventures\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003e✦\u003c\/strong\u003e Water-resistant nylon shell shrugs off light rain and trail spray (fabric treatment, not rated for submersion)\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003e✦\u003c\/strong\u003e Padded shoulder straps and a breathable back panel for all-day comfort on long carries\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003e✦\u003c\/strong\u003e Organizer pockets keep phone, keys, power bank and water bottle within easy reach\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003e✦\u003c\/strong\u003e Reinforced stitching and sturdy zippers hold up to repeated packing and rough travel\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003e✦\u003c\/strong\u003e Unisex sizing with an adjustable fit for a wide range of body types\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003e✦\u003c\/strong\u003e Compact profiles: 29 x 48 x 14 cm (25L) and 35 x 58 x 20 cm (45L)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-specs\"\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cul style=\"list-style:none;padding:0;\"\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eCapacity:\u003c\/strong\u003e 25L or 45L\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eDimensions 25L:\u003c\/strong\u003e 29 x 48 x 14 cm\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eDimensions 45L:\u003c\/strong\u003e 35 x 58 x 20 cm\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eMaterial:\u003c\/strong\u003e High-density nylon\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eWater resistance:\u003c\/strong\u003e Water-resistant fabric treatment (not 100% waterproof)\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eGender:\u003c\/strong\u003e Unisex\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eRain cover:\u003c\/strong\u003e Not included\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eCompartments:\u003c\/strong\u003e Main compartment with organizer pockets\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eStrap system:\u003c\/strong\u003e Padded shoulder straps with breathable back panel\u003c\/li\u003e\n\u003cli style=\"padding:8px 0;border-bottom:1px solid #f0f0f0;\"\u003e\n\u003cstrong\u003eBest for:\u003c\/strong\u003e Hiking, camping, climbing, travel, cycling and daily carry\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-applications\"\u003e\n\u003ch3\u003eApplication Scenarios\u003c\/h3\u003e\n\u003cp\u003eThe Summitline earns its place in different lives. A trail runner uses the 25L for dawn loops with water and a wind shell. A weekend camper packs the 45L with a tent, a stove and two days of food, and still has room for the folding chair. A commuter keeps the 25L in the city, carrying a laptop, gym clothes and lunch without looking like a tourist. A traveler crosses borders with the 45L as a single checked bag that refuses to burst at the seams. Whatever the route, the same question decides the choice: what do you actually need on your back, and how little can it weigh while doing the job.\u003c\/p\u003e\n\u003cp\u003eFor the 25L, think of it as a one-bag city kit that also handles a summit day. For the 45L, the same frame carries a long weekend without a second bag. Either way, the pack's real test comes on the third day of a trip, when the straps still sit right and the zippers still run smooth, and that is the test it passes.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"product-faq\"\u003e\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the backpack fully waterproof?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe fabric carries a water-resistant treatment that sheds light rain and trail spray. It is not rated for submersion or sustained downpours, so for heavy weather use a rain cover or dry bags inside the main compartment.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Which size should I choose?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 25L suits day hikes, gym sessions and carry-on city use. The 45L handles multi-day treks, camping and extended travel. The 25L measures 29 x 48 x 14 cm and the 45L measures 35 x 58 x 20 cm.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Does it fit a 15-inch laptop?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The main compartment of both sizes comfortably fits a 15.6-inch laptop, and the padded back panel cushions it against your spine when the pack is worn.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is it comfortable on long hikes?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe padded shoulder straps and breathable back panel distribute the load evenly. For heavier loads, pack the heaviest items close to your back so the center of gravity stays stable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Can I take it as carry-on luggage?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 25L fits most airline carry-on limits. The 45L may need to be checked on budget carriers, so confirm your airline's dimension limits before departure.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What options are available?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe listing offers the 25L and 45L capacities in several colorways. Select your preferred size and color combination at checkout.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: How does the water-resistant treatment behave in real rain?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eIt beads and sheds light rain, so contents stay dry in a shower or mist. In a sustained downpour, moisture can eventually work through the seams, which is standard for this class of pack; a rain cover adds full protection.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: Is the backpack machine washable?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eSpot clean with mild soap and a damp cloth. Machine washing can strip the water-resistant coating, so keep the pack out of the washer and dryer.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv style=\"margin-bottom:15px;\"\u003e\n\u003cp\u003e\u003cstrong\u003eQ: What happens if the size is wrong for me?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 25L and 45L differ in fit and volume, so measure against your gear before ordering. If the size does not work, contact our support team within the return window and we will arrange a replacement.\u003c\/p\u003e\n\u003c\/div\u003e\u003cdiv class=\"eastsupplier-promise\"\u003e\n\u003ch3\u003eThe EastSupplier Promise\u003c\/h3\u003e\n\u003cp\u003eEvery product on this page is checked before dispatch and backed by responsive support. If an item arrives damaged or does not match its listing, contact us and we will make it right. That promise is the reason EastSupplier has earned the trust of buyers across the world, and it is non-negotiable.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"product-gallery\" style=\"margin-top:30px;text-align:center;\"\u003e\n\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S3dbd8115f4a04691bdcc2009fcc47d5fL.webp?v=1729817555\" alt=\"The Summitline 25L-45L ultralight hiking backpack\" style=\"max-width:100%;height:auto;margin:8px 0;border-radius:6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Se6ddb45dad1846a9b959b0b2cc883f8c0.webp?v=1729817556\" alt=\"The Summitline 25L-45L ultralight hiking backpack\" style=\"max-width:100%;height:auto;margin:8px 0;border-radius:6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S856424da3d0d4609aa9ab0c87b3757d9s.webp?v=1729817555\" alt=\"The Summitline 25L-45L ultralight hiking backpack\" style=\"max-width:100%;height:auto;margin:8px 0;border-radius:6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S8d1f32f2cd0344d09297d2fda516c8a0k.webp?v=1729817555\" alt=\"The Summitline 25L-45L ultralight hiking backpack\" style=\"max-width:100%;height:auto;margin:8px 0;border-radius:6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S0b1869f9f59d434abb73db48982be1c2m.webp?v=1729817556\" alt=\"The Summitline 25L-45L ultralight hiking backpack\" style=\"max-width:100%;height:auto;margin:8px 0;border-radius:6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S4f9d4ad7b0c5433da42d54cbfd39c121W.webp?v=1729817555\" alt=\"The Summitline 25L-45L ultralight hiking backpack\" style=\"max-width:100%;height:auto;margin:8px 0;border-radius:6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S3944f217087b4f96810eac91bf01adc2A.webp?v=1729817555\" alt=\"The Summitline 25L-45L ultralight hiking backpack\" style=\"max-width:100%;height:auto;margin:8px 0;border-radius:6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Scec358ae114e497eaeadeccc974ebc7d0.webp?v=1729817555\" alt=\"The Summitline 25L-45L ultralight hiking backpack\" style=\"max-width:100%;height:auto;margin:8px 0;border-radius:6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S37a286f45a384d25aecf7fa466a79fb9v.webp?v=1729817555\" alt=\"The Summitline 25L-45L ultralight hiking backpack\" style=\"max-width:100%;height:auto;margin:8px 0;border-radius:6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sca682b553f9245b08a2a1084d6784268c.webp?v=1729817556\" alt=\"The Summitline 25L-45L ultralight hiking backpack\" style=\"max-width:100%;height:auto;margin:8px 0;border-radius:6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sacd19d838249412c9317f65a4cbac290n.webp?v=1729817557\" alt=\"The Summitline 25L-45L ultralight hiking backpack\" style=\"max-width:100%;height:auto;margin:8px 0;border-radius:6px;\" loading=\"lazy\"\u003e\u003cimg src=\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/Sf94f730ea6f244ef8240210bb08839d0M.webp?v=1729817557\" alt=\"The Summitline 25L-45L ultralight hiking backpack\" style=\"max-width:100%;height:auto;margin:8px 0;border-radius:6px;\" loading=\"lazy\"\u003e\n\u003c\/div\u003e\u003cscript type=\"application\/ld+json\"\u003e\n{\n  \"@context\": \"https:\/\/schema.org\/\",\n  \"@type\": \"Product\",\n  \"name\": \"The Summitline | 25L-45L Ultralight Water-Resistant Hiking Backpack\",\n  \"image\": [\"https:\/\/cdn.shopify.com\/s\/files\/1\/0503\/6412\/1244\/files\/S3dbd8115f4a04691bdcc2009fcc47d5fL.webp?v=1729817555\"],\n  \"description\": \"A trail is a conversation between weight and will. 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